Yonatan and Yoni wanted to do a documentary. They had to knock on people's door and interview the people.
An earring kid starts knocking hard on Sergei's door. Sergei comes outside mad and they started talking and filming.
Sergei hits the kid's head with a burner because he thinked that he was going to steal his goldfish. Sergei "kills" because the kid fell and blood was coming from his head. The goldfish said to Sergei that the kid was dead. He had to use his final wish to bring the kid back to life, but we don't know what decision he chose.